Sharp XV-C100A Service Manual page 27

TROUBLE SHOOTING TABLE (Continued)
Checking the IC1501
interface circuit
Are there video signal outputs at pins
(32), (34) and (36) of IC1501?
Check Q1501, Q1502, Q1503,
Q1504, Q1505 and Q1506.
Lamp Failure to Light Up
Remove Q1701. Does F1701 break
down again?
No problem with fuse
Is discharging sound heard?
Yes No
Replace
Check trigger
T1702 or
circuit.
lamp.
No
Yes
No
Ballast unit in trouble.
Fuse blown-out
Do Q1701 and L1701 break down in
the short-circuit mode?
Yes
R e p l a c e
Q1701 and
L1701.
27
Check the voltages of all the
IC1501 pins. Check also their
peripheral circuits.
Yes
Power unit in trouble.
No
C h e c k Q 1 7 0 1 ,
L1701 and their
peripheral circuits.
XV-C100A/M/E